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  <title>Invoke</title>
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  <div id="layout-content"><div id="reflectionmethod.invoke" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">ReflectionMethod::invoke</h1>
  <p class="verinfo">(PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">ReflectionMethod::invoke</span> &mdash; <span class="dc-title">Invoke</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-reflectionmethod.invoke-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="methodname"><strong>ReflectionMethod::invoke</strong></span>(<span class="methodparam"><span class="type">?</span><span class="type"><span class="type">object</span><span class="type"></span></span> <code class="parameter">$object</code></span>, <span class="methodparam"><span class="type"><a href="language.types.declarations.html#language.types.declarations.mixed" class="type mixed">mixed</a></span> <code class="parameter">...$args</code></span>): <span class="type"><a href="language.types.declarations.html#language.types.declarations.mixed" class="type mixed">mixed</a></span></div>

  <p class="para rdfs-comment">
   执行反射的方法。
  </p>

 </div>


 <div class="refsect1 parameters" id="refsect1-reflectionmethod.invoke-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>
    
     <dt>
<code class="parameter">object</code></dt>

     <dd>

      <p class="para">
       如果执行的方法是静态类，那么这个参数传送 <span class="type">null</span>。
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">args</code></dt>

     <dd>

      <p class="para">
       0，或者传送给方法的参数列表。可以通过这个参数，给方法传送大量的参数。
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-reflectionmethod.invoke-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   返回方法的返回值
  </p>
 </div>


 <div class="refsect1 errors" id="refsect1-reflectionmethod.invoke-errors">
  <h3 class="title">错误／异常</h3>
  <p class="para">
   如果 <code class="parameter">object</code> 并没有包含一个可以使用的类实例，那么将产生
   一个 <span class="classname"><a href="class.reflectionexception.html" class="classname">ReflectionException</a></span>。
  </p>
  <p class="para">
   如果方法调用失败，也会产生一个 <span class="classname"><a href="class.reflectionexception.html" class="classname">ReflectionException</a></span>。
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-reflectionmethod.invoke-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-5226">
    <p><strong>示例 #1 <span class="methodname"><strong>ReflectionMethod::invoke()</strong></span> 示例</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #007700">class&nbsp;</span><span style="color: #0000BB">HelloWorld&nbsp;</span><span style="color: #007700">{<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;function&nbsp;</span><span style="color: #0000BB">sayHelloTo</span><span style="color: #007700">(</span><span style="color: #0000BB">$name</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;</span><span style="color: #DD0000">'Hello&nbsp;'&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #0000BB">$name</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br /><br />}<br /><br /></span><span style="color: #0000BB">$reflectionMethod&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">ReflectionMethod</span><span style="color: #007700">(</span><span style="color: #DD0000">'HelloWorld'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'sayHelloTo'</span><span style="color: #007700">);<br />echo&nbsp;</span><span style="color: #0000BB">$reflectionMethod</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">invoke</span><span style="color: #007700">(new&nbsp;</span><span style="color: #0000BB">HelloWorld</span><span style="color: #007700">(),&nbsp;</span><span style="color: #DD0000">'Mike'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>以上例程会输出：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
Hello Mike
</pre></div>
    </div>
   </div>
  </p>
 </div>


 <div class="refsect1 notes" id="refsect1-reflectionmethod.invoke-notes">
  <h3 class="title">注释</h3>
  <blockquote class="note"><p><strong class="note">注意</strong>: 
   <p class="para">
    当需要引用参数时，不能使用 <span class="methodname"><strong>ReflectionMethod::invoke()</strong></span>。必须使用
    <span class="methodname"><a href="reflectionmethod.invokeargs.html" class="methodname">ReflectionMethod::invokeArgs()</a></span> 代替（在参数列表传递引用）。
   </p>
  </p></blockquote>
 </div>


 <div class="refsect1 seealso" id="refsect1-reflectionmethod.invoke-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="methodname"><a href="reflectionmethod.invokeargs.html" class="methodname" rel="rdfs-seeAlso">ReflectionMethod::invokeArgs()</a> - 带参数执行</span></li>
    <li class="member"><a href="language.oop5.magic.html#object.invoke" class="link">__invoke()</a></li>
    <li class="member"><span class="function"><a href="function.call-user-func.html" class="function" rel="rdfs-seeAlso">call_user_func()</a> - 把第一个参数作为回调函数调用</span></li>
   </ul>
  </p>
 </div>


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